Re: kern/45889: sdtemp(4) driver does strange stuff when loaded as module

[Paul Goyette <paul%whooppee.com@localhost>]

The following reply was made to PR kern/45889; it has been noted by GNATS.

From: Paul Goyette <paul%whooppee.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/45889: sdtemp(4) driver does strange stuff when loaded as
 module
Date: Tue, 14 Feb 2012 07:24:15 -0800 (PST)

 Module Name:    src
 Committed By:   pgoyette
 Date:           Tue Feb 14 15:08:07 UTC 2012
 
 Modified Files:
          src/sys/dev/pci: amdpm_smbus.c amdpmvar.h ichsmb.c nfsmb.c 
 piixpm.c
 
 Log Message:
 Replace the xxx_acquire()/xxx_release() rwlocks with mutexes.  There are
 only RW_WRITERs for these, and no RW_READERs, so no need to incur the
 extra overhead of allowing for both.  As discussed on tech-kern.
 
 For piixpm and ichsmb, the acquire/release protocol needs to be used, 
 even if the request is I2C_F_POLL'd (or if the device supports only
 polled mode).  Otherwise multiple requests can be running at the same
 time, and they stomp on each other and create anomolous results.
 
 Part 2 addresses my PR kern/45889
 
 3 ACKs from releng